In CAM plants `CO_(2)` is taken up by the ________through stomata

Options

A. green stems
B. leaves on green stems
C. leaves on non green stems
D. leaves on green during the day

Answer

**Step-by-Step Solution:**

1. **Understanding CAM Plants**: CAM (Crassulacean Acid Metabolism) plants are adapted to dry environments. They have a unique way of photosynthesis that allows them to conserve water.

2. **Stomata Function**: In CAM plants, the stomata (tiny openings on the leaf surface) play a crucial role in gas exchange. They are responsible for the uptake of carbon dioxide (CO2) for photosynthesis.

3. **Timing of Stomata Opening**: Unlike most plants that open their stomata during the day, CAM plants open their stomata at night. This adaptation helps them minimize water loss during the hotter daytime hours.

4. **CO2 Uptake**: During the night, when the stomata are open, CAM plants take up CO2 from the atmosphere. This CO2 is then stored in the form of organic acids (like malate) until daylight.

5. **Photosynthesis During the Day**: During the day, the stomata remain closed to prevent water loss. The stored CO2 is then used for photosynthesis, converting it into glucose, which serves as food for the plant.

6. **Final Answer**: Therefore, in CAM plants, CO2 is taken up by the **leaves** through stomata.

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